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<br />I <br />Ie y = specific weicjht of the fluid <br />Ys = specific weiCjht of the sediment <br />I <br />('" = apparent roughness of the bed <br /> ('" = dimensionless bend angle <br />I 0 <br />0 = angle between the drag force and the particle movement direction <br /> 0' = thickness of the laminar sublayer in turbulent flow <br />I c = exponent in Laursen's equation <br />Tl = stability number for particles on a plane bed <br />I Tl = stability number for particles on side slopes <br /> 1 <br />0 = side slope angle <br /> 0 = inclination angle of a channel <br />I 0 = bend angle in supercritical flows <br /> 1 <br /> 0 = angle of orientation of the embankment <br />I e <br />Ie = von Karman velocity constant <br /> ).. = wave length <br />II }.. = angle between the horizontal and the drag force vector <br />u = dynamic viscosity of a fluid <br />\) = kinematic viscosity of a fluid <br />. <br /> ~ = correction factor, a function of Ds/x in Einstein's method <br />I ~ = function of other parameters (Eq. 5.3.31) <br /> p = fluid density <br />I p = density of a fluid entering a control volume <br /> 1 <br /> p = density of a fluid leaving a control volume <br /> 2 <br />I Ps = density of sediment particles <br />0 " correction coefficient for piers <br />I 1: = shear stress <br />1: = bed shear stress <br /> 0 <br /> 1: = cr itical shear stress <br />I c <br /><1>" = dimensionless sediment transport function <br /> 1J1 = uncorrected entrainment function <br />I 1J1" = entrainment function <br /> IJ) = fall velocity of a sediment particle <br />I IJ) = angle of the abutment- <br /> a <br />f xxxvii <br />II <br />